Can I use an HDMI 1.3 cable in a 1.2a slot?

HDMI cable versions 1.3 and 1.2a are compatible with each other, according to the HDMI Association. HDMI version 1.3 cables are also backwards compatible with all previous versions of HDMI cable.Re...
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Help with my new computer, according to the specs it has 4 USB ports, 1 HDMI slot, 2 headphone & 1 microphone?